Update groups http example

Author: tyeth

examples/adafruit_io_http/adafruit_io_groups.py

@@ -4,7 +4,7 @@
 # Adafruit IO HTTP API - Group Interactions
 # Documentation: https://io.adafruit.com/api/docs/#groups
 # adafruit_circuitpython_adafruitio with an esp32spi_socket
-import datetime
+import adafruit_datetime as datetime
 import board
 import busio
 from digitalio import DigitalInOut
@@ -15,14 +15,25 @@
 
 
 # Add a secrets.py to your filesystem that has a dictionary called secrets with "ssid" and
-# "password" keys with your WiFi credentials. DO NOT share that file or commit it into Git or other
-# source control.
+# "password" keys with your WiFi credentials, along with "aio_username" and "aio_key" for
+# your Adafruit IO user/key. DO NOT share that file or commit it into Git or other source control.
 # pylint: disable=no-name-in-module,wrong-import-order
 try:
     from secrets import secrets
 except ImportError:
-    print("WiFi secrets are kept in secrets.py, please add them there!")
-    raise
+    import os
+    if os.getenv("ADAFRUIT_AIO_USERNAME") and os.getenv("ADAFRUIT_AIO_KEY"):
+        secrets = {
+            "aio_username": os.getenv("ADAFRUIT_AIO_USERNAME", "Your_Username_Here"),
+            "aio_key": os.getenv("ADAFRUIT_AIO_KEY", "Your_Adafruit_IO_Key_Here"),
+            "ssid": os.getenv("CIRCUITPY_WIFI_SSID", ""),
+            "password": os.getenv("CIRCUITPY_WIFI_PASSWORD", ""),
+        }
+    else:
+        print(
+            "WiFi + Adafruit IO secrets are kept in secrets.py, please add them there!"
+        )
+        raise
 
 # If you are using a board with pre-defined ESP32 Pins:
 esp32_cs = DigitalInOut(board.ESP_CS)
@@ -46,6 +57,11 @@
         continue
 print("Connected to", str(esp.ssid, "utf-8"), "\tRSSI:", esp.rssi)
 
+# If you are using a wifi based mcu use this instead of esp code above, remove the from
+# adafruit_esp32spi import line, optionally esp.connect(secrets["ssid"], secrets["password"])
+# import wifi
+# esp = wifi.radio
+
 # Initialize a requests session
 pool = adafruit_connection_manager.get_radio_socketpool(esp)
 ssl_context = adafruit_connection_manager.get_radio_ssl_context(esp)
@@ -84,9 +100,17 @@
 print("Getting fresh humidity feed info... (notice groups)")
 print(io.get_feed(humidity_feed["key"]))
 
+# fetch current time
+print("Fetching current time from IO... ", end="")
+year, month, day, hour, minute, second, *_ = io.receive_time()
+old_time = datetime.datetime(year, month, day, hour, minute, second)
+print(old_time.isoformat())
+
 # Publish data for multiple feeds to a group, use different timestamps for no reason
 print("Publishing batch data to group feeds with created_at set 99minutes ago...")
-thetime = datetime.datetime.now(datetime.timezone.utc) - datetime.timedelta(minutes=99)
+thetime = old_time - datetime.timedelta(minutes=99)
+print(thetime)
+
 io.send_group_data(
     group_key=sensor_group["key"],
     feeds_and_data=[